WO2007101668A2

WO2007101668A2 - Embossing device for at least two-layered planar products such as toilet paper, tissues, or similar

Info

Publication number: WO2007101668A2
Application number: PCT/EP2007/001945
Authority: WO
Inventors: Jürgen Schütz
Original assignee: Metsä Tissue Oyj
Priority date: 2006-03-08
Filing date: 2007-03-07
Publication date: 2007-09-13
Also published as: PL1991411T3; ES2325606T3; CA2644534C; RU2408463C2; CN101394992B; DE502007000705D1; DE102006010709A1; CA2644534A1; ITRM20060167U1; US8708020B2; CN101394992A; RU2008139897A; DK200600197U3; PL1991411T5; JP4942772B2; EP1991411B1; FIU20060311U0; PT1991411E; UA96968C2; SI1991411T1

Abstract

The aim of the invention is to create an embossing device for at least two-layered planar products such as toilet paper, tissues, or similar, which makes it possible to easily make high-quality planar products that are provided with decorative patterns. Said aim is achieved by an embossing device for at least two-layered planar products such as toilet paper, tissues, and similar, comprising at least one first and at least one second couple of rollers, each of which is composed of an embossing roller and a squeezer. The embossing roller of the first couple is provided with a plurality of embossing points at a number of about 20 to 70 per cm2, preferably up to about 45 per cm2, said embossing points being evenly distributed across the entire embossing area of the embossing roller, in order to create a planar microembossed design on at least one layered web. The embossing roller of the second couple encompasses first and second areas that are distributed across the embossing area thereof. The first areas are equipped with a plurality of embossing points at a number of about 45 to about 70 per cm2 in order to create a planar microembossed design on at least one additional layered web while the second areas have no embossing points, form a maximum of 40 percent of the entire embossing area, and are not interconnected. The inventive embossing device further comprises at least one gluing station which is arranged adjacent to the embossing roller of the second couple, downstream from the respective squeezer, and by means of which glue is applied to the embossing points of the embossing roller. The embossing rollers are placed relative to one another so as to form a nip for joining the embossed layered webs. A joining roller is positioned downstream from the nip, adjacent to the embossing roller of the first couple, in order to connect the layered webs.

Description

Embossing device for at least two-day surface products such as toilet paper, handkerchiefs or the like

The present invention relates to an embossing device for at least two-ply Flächen- products such as toilet paper, handkerchiefs or the like with at least a first and a second pair of rollers, each having an embossing roll.

Embossing devices of the type mentioned are known in many ways from the prior art. For example, EP 1 096 069 A2 discloses such an embossing device for producing a multi-layer absorbent paper product with an embossing pattern, one layer each being unrolled from a unwinding and fed to a pair of rollers consisting of a rubber roller and an embossing roller. The respective layer webs are embossed, one of the layer webs provided with glue and then passed to form a so-called "nested" structure through a gap arranged between the two embossing rollers of the roller pairs and the layers are firmly connected to each other via a subsequent connecting roller.

There is now an increased demand for two-layered or multi-layered sheet products, in particular of tissue and / or tissue-like materials, such as toilet paper, handkerchiefs, kitchen towels or the like, which carry decorative patterns. Here, it is desired that the respective decorative patterns appear very concise and sharp, and optionally the surface product is additionally added by means of color an optical effect.

For the purposes of the present invention, tissue is understood to mean a product which corresponds to DIN 6730. Accordingly, tissue is a product which consists wholly or predominantly of pulp fibers, with a fine and soft crepe, which is creped in a closed formation in the paper machine with a dry content of more than 90%, consists of one or more layers, is particularly absorbent, a surface mass of the individual layer of less than 5 g / m ² before creping and a creping wet stretch greater than 5%.

For the purposes of the present invention, tissue-like material is understood as meaning a material which, in contrast to tissue material, is produced by changes in the drying process. According to DIN 6730, tissue-like material is a product predominantly made of cellulose fibers with large and wide creping and open formation, which is creped dry in the paper machine and from one or more layers wherein the basis weight of a layer before crimping is less than 25 g / m ² and the wet crumb elongation of a layer after crimping is greater than 24%. The material can also be made from waste paper.

It is therefore an object of the present invention to provide an embossing device, by means of which easily provided with decorative patterns surface products are produced in high quality.

This object is achieved by an embossing device for at least two-ply surface products such as toilet paper, handkerchiefs and the like

with at least a first and at least a second roller pair, each formed from an embossing roller and a rubber roller, wherein the embossing roller of the first pair uniformly distributed over its entire embossing surface a plurality of embossing points in a number from about 20 to about 70 per cm ² , preferably about 45 per cm ² for producing a planar microembossing on at least one layer web, and wherein the embossing roll of the second pair has distributed over its embossing surface first and second regions, wherein the first regions a plurality of embossing points in a number from about 45 to about 70 per cm ² to produce a surface microembossing on at least one further layer web, and the second regions have no embossing points, wherein the second regions do not constitute more than 40% of the total embossing surface and are not interconnected, with at least one gluing plant, which adjacent Embossing roll of the second paa res and subsequently the corresponding rubber roller, by means of which glue is applied to the embossing points of the embossing roll,

- Wherein the embossing rollers are arranged to form a gap for merging the embossed layer webs to each other, and

- wherein subsequently to form a layer connection of the layer webs adjacent to the embossing roller of the first pair, a connecting roller is arranged.

The layer webs themselves can be one-, two-, three- or four-ply, but also five- or six-ply, be formed. The arrangement of the first and second roller pair can be done in any technically possible manner. In this case, for example, the two pairs of rollers lie on a common axis and be associated with each other in mirror image. However, it is also possible, for example, for the rubber roller to be arranged laterally offset relative to the embossing roller, and the further roller pair to be correspondingly arranged. Accordingly, the two embossing rollers come to lie on a first plane and the two rubber rollers in a first plane offset second plane. In each case a gap is provided between the two embossing rollers. In addition, the embossing device according to the invention can also have two or even three gluing units and can be used for the production of at least two-ply, preferably at least three-ply, but also four- or five-day surface products. The individual layers are thereby unrolled as webs of unwinding devices, in which case the webs can also be configured as double-layered or even three-layered in advance.

Due to the embossing device according to the invention is advantageously achieved that due to the intended number of embossing points (also called embossing nubs) on the embossing roller of the first pair of rollers sufficient bulk and softness of the relevant web is given, i. that this has a higher volume than the embossed by means of the second pair of rollers at least one further layer web. This is provided by means of the embossing roller of the second pair of rollers with a decorative pattern. Due to the higher density of the embossing points here a very clear representation of the decor pattern is achieved. The embossing points of the embossing roller which mediates the decoration of the further layer web can be arranged linearly and at right angles to each other. In this case, the respective rows formed by the embossing points are preferably formed symmetrically offset from one another. The decor pattern is caused in the embossing roll by simply omitting the embossing points at the appropriate places. In a particularly preferred embodiment according to the present invention, however, the embossing points are not arranged linearly, but arranged in the form of the pattern itself on the embossing roller. As a result, for example, a flower motif surrounds a closed certain number of embossing points in the form of just a flower, whereby the embossed motif in the finished surface product for the viewer is clearer and clearer. At the same time, the softness of the product is also increased. But not only the decorative motif as a whole, but possibly also individual components thereof can be surrounded by a closed line of embossing nubs in the preferred embodiment. The decor pattern itself can have any configuration, it can be designed, for example, in the form of a flower, a bird, a heart, etc.

Because the at least one gluing unit is arranged adjacent to the embossing roller that applies the decorative pattern, it is advantageously achieved that the areas of the corresponding layer web having the motif are not provided with glue since, when the various layer webs merge, this results in an uneven effect. more intensive training of the topic of preamble. Preferably, the embossing device according to the invention is configured such that the layer which carries the decorative pattern comes to lie on an outer side of the formed finished surface product, wherein it is further preferred that the side of the web which bears directly on the embossing roller of the second pair of rollers, an outer side of the surface product forms.

In a preferred embodiment of the embossing device according to the invention, the gluing unit applies color-added and / or colored glue. In this case, it is possible to proceed in such a way that the clear or white-colored glue used is subsequently mixed with a corresponding colorant, or else immediately a color-coded glue is applied. In this way, an additional optical effect is achieved, namely by the microembossing pattern formed by the embossing points of the embossing roller of the second roller pair is visible through the colored glue for the viewer and user. As a result, the surface product is given a uniform background design, whereby the decorative pattern emerges even more for the viewer.

More preferably, the rubber rollers of the at least two pairs of rollers have a hardness in a range of about 50 to 70 Shore A. The connecting roller may also be formed as a rubber roller, which is preferably provided with a sheath. The core of the connection roller preferably has a hardness in a range of about 50 to about 70 Shore A, whereas the shell has a hardness in a range of about 80 to about 100 Shore A. However, the shell can be formed, for example, from a steel shell. By providing the connecting roller with a higher hardness, a secure and uniformly firm connection of the individual layers is achieved. The individual layers of the surface product according to the invention may at least partially have a so-called "nested" structure, ie that the elevations obtained by the embossing by means of an embossing roller come to lie in corresponding recesses obtained by the second embossing roller in the further layer web. This can be done in particular when the density of the embossing points of the first roller and the second roller is approximately equal. Preferably, however, a compound of the individual layer webs is obtained with the embossing device according to the invention such that neither a pure "nested" structure nor a pure "tip-to-tip" structure is present, ie such a structure in which the elevations, which by means of an embossing roll is produced in the one layer web to which the elevations obtained by means of the further embossing roll on the further layer web come to rest. In this advantageous embodiment, a higher volume of the surface product produced by means of the embossing device according to the invention is achieved. Is a layer web already multi-layered? is this, for example, fed by a rolling device as a two- or three-layer dressing of the embossing device, this multi-layer layer web may also have a "nested" - or a "tip-to-tip" structure, obtained by a previous embossing with another , third pair of rollers, but here again an irregular connection of the individual layer webs can be provided.

Preferably, the embossing pressure of the first and second roller pairs is in a range of about 4.0 bar to about 8.2 bar, preferably about 5.7 bar to about 6.3 bar. The embossing pressure is adjusted by adjusting the rubber roller in relation to the embossing roller, wherein either the rubber roller or the embossing roller is movably arranged in the embossing device. In this case, the embossing pressure is selected with regard to the material used and the embossing pattern to be achieved with a decorative pattern. Basically, the embossing nubs of the embossing rollers penetrate into the softer rubber material of the rubber rollers.

Preferably, the line pressure is in the embossing, both in the micro embossing as well as the decorative pattern embossing in combination with a microembossing, in a range of about 15 N / mm to about 25 N / mm, preferably to about 20 N / mm , The line pressure is calculated from the applied pressure on the pneumatic cylinders of the roller pairs in multiplication with the length of the lever arm and divided by the embossing width, which is determined by the width of the embossing surface of the embossing roller.

More preferably, the embossing nubs, which are arranged on the embossing rollers, a height in a range of about 0.7 mm to about 1, 5 mm and for the production of handkerchiefs a diameter of the embossing surface of the embossing points in a range of about 0.35 mm to about 0.7 mm, preferably up to about 0.55 mm. For the production of kitchen paper, in particular in roll form, the embossing points or embossing nubs, which are arranged on the embossing rollers, a height in a range of about 1 mm to about 1, 5 mm and a diameter of the embossing surface of the embossing points in one Range of about 1 mm to about 1, 5 mm, preferably about 1, 3 mm, with a round formation of the embossing points. In principle, the diameter of the embossing dots or nubs may be in a range from about 0.35 mm to about 1.7 mm. In the manufacture of kitchen paper, particularly in roll form, with oval embossing nubs, these have a height in a range of about 1 mm to about 1.5 mm and a length of the major axis of the embossing surface of the embossing points in a range of about 1, 3 mm to about 1, 7 mm, preferably about 1, 5 mm, and a length of the minor axis of the embossing surface of the embossing points in a range from about 0.9 mm to about 1.3 mm, preferably about 1.1 mm. Preferably, the embossing points or nubs are formed frusto-conical and arranged on the surface of the embossing rollers, ie the foot portion thereof has a larger diameter than the actual embossing surface in the head region thereof. The embossing surface of the head region can itself be rounded or any other form raised, but the embossing surface can also be formed completely flat. Preferably, the flanks of the embossing points are formed at an angle of about 8 ° to about 18 ° to each other. With such an expression of the embossing points, it is possible to form the same very sharply protruding, particularly when the same is arranged on an embossing roll in the form of the predetermined decorative pattern. The embossing points or nubs can be arranged not only uniformly but also irregularly on the embossing rollers in the first regions, in particular if it is desired to emphasize the effect of the second regions achievable decorative patterns in its optical effect. It is particularly advantageous to increase the density of the embossing points or nubs in the immediate vicinity of the second regions in the first regions.

The height of the embossing points or embossing nubs can preferably also be designed differently. In particular, at least the first, more preferably the first to fifth, even more preferably the first to third, surrounding a decor pattern or lying within the line of embossing dots or points a height in a range of about 1, 0 mm 1, 5 mm, preferably 1, 1 to 1, 3 mm, whereas the other in the region between the respective decorative patterns arranged embossing points or embossing nubs have a height in a range of about 0.7 mm to 0.9 mm. By means of such a configuration, on the one hand, it can be achieved that glue is applied only to those embossing points or embossing nubs which have the greater height. This has the great advantage of reducing the rigidity of the resulting embossed material. In addition, by using a colored glue, which is applied exclusively to the embossing points or embossing nubs with the greater height, a beautiful visual effect can be achieved.

In a preferred embodiment, the connecting roller and / or glue application roller is formed spirally or cylindrically, preferably spirally. In this way, a further increase in the softness and the volume of the manufactured surface product can be achieved.

The embossing rollers are preferably made of steel. The surface of the embossing rollers is produced in a laser process, omitting the embossing points in the rich of the decorative pattern, or by setting the embossing points immediately in the form of the corresponding decorative pattern. However, it may also be provided to first produce an embossing roll with embossing points arranged symmetrically on this one another at a right angle to one another and offset, and subsequently at least partially removing them in the area of the decorative master. In this case, parts of the individual embossing stopper can also be left standing, so that embossing is carried out only by a halved head surface, for example. Furthermore, the present invention relates to an at least two-ply surface product, preferably at least three-ply, more preferably at least four-ply surface product prepared with the embossing device according to the invention, with at least one microembossing with a number of embossing points in a number in a range of about 20 to about 70 per cm ² , preferably up to about 45 per cm ² having layer and at least one further layer having first and second regions, said first regions having a plurality of embossing points in a number in a range of about 45 to about 70 per cm ² , and the second regions have no embossing points, the second regions not covering more than 40% of the ply surface and not interconnected. The non-connection of the second regions to one another makes it possible to form concrete individual patterns on the surface product, and surface products which have an outstanding optical effect are obtained taking into account the area of the second regions relative to that surface of the first regions.

It can preferably be provided that the micro-embossing points of the second layer are formed in color. As already described above, this results in an additional optical effect. Furthermore, it can also be provided that the second layer in turn consists of several individual layers, which were previously fed from a common or even separate unwinding the second pair of rollers. The surface product is preferably designed as a handkerchief, household paper, kitchen paper and / or toilet paper.

These and other advantages of the present invention will be explained in more detail with reference to the following figures. Show it:

1 shows a schematic view of an embossing device according to the invention;

FIG. 2 shows a view of the surface of the second embossing roller according to FIG. 1; FIG.

3 shows a detailed view D of FIG. 2; 4 shows a view along the section AA of FIG. 3; and

5 shows a view of the surface of an alternatively formed second embossing roller according to FIG. 1;

6 shows a view of the surface of an alternatively formed second embossing roller according to FIG. 1; and

Fig. 7: a view of the surface of another alternatively formed second

Embossing roll according to FIG. 1.

It should first be pointed out that the invention is not restricted to the combinations of features shown in the individual figures. Rather, the features disclosed in the description including the description of the figures can be combined with those indicated in the figures.

1 shows a schematic illustration of an embossing device according to the invention designated by the reference numeral 10 for producing a two-ply surface product 40. A first at least single ply web 24 is formed by a unwinding device 44.1 comprising a unwind 46.1 and a deflecting roller 48.1, a first pair of rollers 12 fed, which has a rubber roller 18 and an embossing roller 16 with embossing points (embossing nubs) 38. The embossing roller 16 has embossing points 38 arranged uniformly on the surface of the same and having a density in a range of approximately 40 per cm ² . The embossing points are preferably arranged in a row in a symmetrical pattern at a right angle to each other, wherein the rows are also arranged offset from each other symmetrically.

From a second unwinding device 44.2 comprising a unwinding 46.2 and a deflecting roller 48.2, an at least single-ply layer web 30 is unwound and fed to the second pair of rollers of the embossing device 10. The layer web 30 is fed to the embossing roller 20 via a rubber roller 22, the embossing roller 20 likewise having embossing points 38. In this case, however, the embossing roll 20 is provided with first and second regions, wherein the first regions of the layer web 30 give up a microembossing and have symmetrically or asymmetrically arranged embossing points in a density of about 60 per cm ² . The second areas of the embossing roller 20, however, are formed without embossing points and have the shape of a decor. Below the Embossing of the further layer web 30, the elevations produced by the embossing points are provided with glue 34 by means of a gluing unit 32. Subsequently, the layer web 30 as well as the embossed layer web 24 via the first pair of rollers 12 and the second pair of rollers 14 a gap 17 is supplied, in which a compound of the layer webs 24 and 30 takes place. Following this combination, the formed composite is fed via the second embossing roll 20 to a marriage roll 36, which is also formed as a rubber roll but with a sheath hardness of about 90 Shore A, as opposed to a hardness of the rubber rolls 18 and 22 with a value of about 60 Shore A. Subsequently, the surface product formed 40 is led out of the embossing device.

In FIG. 1, a combination of the first layer web 24 with the further layer web 30 in the form of a so-called "nested" structure is shown for the sake of simplicity. In this case, a combination of the individual layer webs can also take place in any other way, in which case a combination preferably takes place in such a way that neither a pure "nested" structure nor a pure "tip-to-tip" structure is obtained, if possible To obtain large volume of the produced surface product 40. Glue is applied in an amount of 0.438 g / cm ² to the elevations of the second embossing roller 20 formed by the embossing points 38 by means of the gluing unit 32. By means of the embossing roller 20, a degree of coverage of about 3.53%, based on the top surface of the individual embossing points, of the embossed layer web 30 is obtained. By means of the first embossing roll 16, a degree of coverage of about 6.8% is achieved.

The distance between the embossing nubs of the second embossing roller 20 was about 1.29 mm, whereas the distance of the embossing points of the first embossing roller 16 was about 1.58 mm.

Fig. 2 now shows a side view of the embossing roller 20 having a plurality of embossing nubs. In this case, first regions 26, which merge into one another, are formed on the second embossing roll 20, which surround second regions 28, wherein these second regions 28 are not interconnected. 2 shows a view of the second embossing roller 20 with respect to a central axis 21.

FIG. 3 now shows a detail D of FIG. 2, the first regions 26 and second regions 28 being clearly visible here. The second region 28 is designed in the form of a margarite, the first regions 26 have a multiplicity of at a right angle mutually arranged embossing points 38, which are arranged offset from each other in rows.

Fig. 4 shows along a section A-A of Fig. 3, the formation of a single embossing point 38, which is approximately frusto-conical with flanks 42, which in toilet paper at an angle W to each other by about 10 °, at Kücherollen about 15 °. The embossing point 38 is arranged on the embossing roller 20. It has a head surface for toilet paper with a diameter d of about 0.45 mm and a height h of about 0.8 mm, for kitchen paper the height h is for example 1.4 mm and the diameter d is about 1 , 3 mm in a round shape.

FIG. 5 now shows an alternative embodiment of the embossing roller 20, the second regions 28 in turn being free of embossing points in the form of a flower corresponding to the decorative pattern, the embossing points here however being arranged on the surface of the embossing roller 20 in the form of the decoration itself. As a result, each individual subregion of the second region 28 is uniformly surrounded by an uninterrupted line of embossing points, whereby a very clear and beautiful decorative pattern is given to the surface product produced by means of the embossing device 10. Here, too, the first regions 26 are arranged between the individual regions 28 and merge into one another, the second regions 28 are not connected to one another. In this case, the individual embossing points of the first regions 26 are arranged as uniformly as possible on the surface of the embossing roller 20 in order to obtain a relatively uniform overall appearance, in particular when applying a colored glue. In the embossing roller 20 according to FIG. 5, the diameter of the embossing surface of the embossing points is slightly higher than in the embodiment according to FIG. 2, namely at 0.5 mm.

Fig. 6 now shows an alternative embodiment of the surface of the embossing roll 20, which has a plurality of embossing nubs. This is an alternative embodiment to the surface shown in FIG. 5. In this case, around the second regions 28 two or three embossing tuft rows 50 or inside the second regions 28 a embossing tuft row 50 are arranged, which have a higher height than the embossing tubs in the first regions 26. For example, the height of the embossing nubs in the first regions 26 is 0.8 mm, whereas the height of the embossing nubs in the rows 50 is 1, 2 mm. 6, the different height of the embossing nubs surrounding the second regions 28 is illustrated by the different contrast of the embossing nubs of the first regions 26 and those of the second regions 28. If, for example, a colored glue is only applied to the rows 50, a product is obtained which produces a has lower stiffness, and at the same time a nice visual effect is obtained. As can be seen from FIG. 6, when relatively complex patterns are formed, it is also possible for the embossing nubs located within a pattern to be raised, as well as the rows 50 surrounding the pattern, in order to produce an optical glue, in particular when a colored glue is applied To achieve effects.

Finally, FIG. 7 shows a further alternative embodiment of the surface of the embossing roller 20 with a central axis 21 which has a plurality of embossing nubs. In this case, the second regions 28 in the interior embossing tuft rows 50 which, as in Fig. 6 as well as the at least immediately adjacent to the second regions 28 embossing tuft series of the first regions 26 may have a higher height than the embossing tufts in the first regions 26, so that Applying colored glue a beautiful visual effect can be achieved. The first regions 26 have an uneven distribution of the embossing nubs over the surface of the embossing roller 20, wherein their density is increased in the environment 54 of the second regions 28. By contrast, in partial surfaces 52 remote from the second regions 28, the first regions 26 have a more even distribution of the embossing nubs.

By means of the embossing device according to the invention, it is advantageously possible to easily and simply entail a high quality embossed pattern, which is preferably made of a tissue and / or tissue-like material in the form of a tissue, a toilet paper, a kitchen paper and / or a household paper. Existing embossing devices can be retrofitted with appropriate embossing rollers with appropriate parameters. It should be noted that for the purposes of the present invention, any arrangement of the respective roller pairs to each other is possible, as well as a supply of the individual webs separated from several unwinding or already together can take place as a layer composite to the embossing device.

Claims

claims

1. embossing device (10) for at least two-ply surface products (40) such as toilet paper, handkerchiefs or the like

with at least one first and at least one second roller pair (12, 14), each formed from an embossing roller (16, 20) and a rubber roller (18, 22), wherein the embossing roller (16) of the first pair (12) over its entire embossing surface uniformly distributed has a plurality of embossing points (38) in a number from about 20 to about 70 per cm ² to produce a planar microembossing on at least one layer web (24), and wherein the embossing roll (20) of the second pair (14) on their Embossing surface distributed first and second regions (26, 28), wherein the first regions (26) a plurality of embossing points (38) in a number of about 45 to about 70 per cm ² to produce a surface micro embossment on at least one other Layer web (30), and the second

Regions (28) have no embossing points, wherein the second regions (28) do not constitute more than 40% of the total embossing surface and are not interconnected, with at least one gluing unit (32) adjacent to the embossing roller (20) of the second pair (14 ) and subsequently the corresponding rubber roller (18), by means of which glue (34) is applied to the embossing points (38) of the embossing roll (20),

- wherein the embossing rollers (16, 20) to form a gap (17) for merging the embossed layer webs (24, 30) are arranged to each other, and - wherein subsequently to form a ply connection of the ply webs (24, 30) adjacent to the embossing roller (16 ) of the first pair (12) a connecting roller (36) is arranged.

2. Embossing device according to claim 1, characterized g e k e n n e c i n e t that the gluing unit (32) applied with color offset and / or colored glue.

3. An embossing apparatus according to any one of the preceding claims, characterized in that the rubber rollers (18, 22) of the first and second pairs (12, 14) have a hardness in a range from about 50 to about 70 Shore A.

4. embossing device according to one of the preceding claims, characterized ge - indicates that the embossing pressure of the roller pairs (12, 14) is in a range from about 4.0 bar to about 8.2 bar.

5. embossing device according to one of the preceding claims, characterized g e - indicates that the line pressure in the embossing in a range of about 15 N / mm to about 25 N / mm.

6. Embossing device according to one of the preceding claims, characterized in that the embossing points (38) have a height in a range of about 0.7 mm to about 1.5 mm.

7. Embossing device according to one of the preceding claims, characterized in that the diameter of the embossing surface of the embossing points (38) in a range of about 0.35 mm to about 1, 7 mm.

8. Embossing device according to one of the preceding claims, characterized in that the embossing points (38) are frusto-conical.

9. Embossing device according to one of the preceding claims, characterized in that the flanks (42) of the embossing points (38) are formed at an angle of about 8 ° to about 18 ° to each other.

10. Embossing device according to one of the preceding claims, character- ized in that the connecting roller (36) and / or the glue application roller is formed spirally or cylindrically.

11. A minimum two-ply sheet product made with an apparatus according to any one of claims 1 to 10, comprising at least one micro-embossment having a number of imprinting dots having a number in a range of about 20 to about

45, and the second areas have no embossing points per cm ² having position and at least one additional layer with first and second regions, wherein the first areas have a plurality of embossing points in a number in a range from about 45 to about 70 per cm ^2, wherein the second areas do not cover more than 40% of the ply area and are not interconnected.

12. Surface product according to claim 11, characterized in that the micro-embossing points of the second layer are formed in color.

13. Surface product according to one of claims 11 or 12, characterized in that it is at least three-ply.

14. Surface product according to one of claims 11 to 13, characterized in that the second regions are formed in the form of a decorative pattern.

15. Surface product according to one of claims 11 to 14, characterized in that the second regions comprising layer forms an outer layer.

16. Surface product according to one of claims 11 to 15, characterized in that this is a tissue, a household paper and / or a toilet paper.